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Top Hammer Drilling Tools for Drifting and Tunneling
Bit Diameter: 33mm-45mm
Length of drill rod: 250mm-4000mm
Button bit design: Flat face, drop centre, normal and retrac body.
Tungsten carbide (Buttons): Spherical, ballistic and conical.
Applications: Drifting, tunneling, bench
We have different designs for various rock formations, and a longer service life to decrease use costs for users.
| Button bit | Dimensions D | Flushing hole (mm) |
Buttons (mm) |
Angle | Class | Part no. | ||||
| mm | in | Front No size |
Gauge No size |
Front No size |
Gauge No size |
|||||
 |
33 35 38 41 43 45 |
1 5/16 1 3/8 1 1/2 1 5/8 1 11/16 1 3/4 |
1×5 1×5 1×5 1×5 1×5 1×5.5 |
1×5 1×5 2×5 2×5 2×5 2×5.5 |
2×7 2×7 2×7 2×8 2×8 2×9 |
5×7 5×8 5×9 5×9 5×10 5×11 |
30° 30° 30° 30° 30° 30° |
H H H H H H |
3033R2507 3035R2507 3038R2507 3041R2507 3043R2507 3045R2507 |
|
 |
33 41 |
1 5/16 1 5/8 |
2×4.5 2×5.5 |
2×4.5 2×5 |
2×7 2×8 |
6×7 6×9 |
30° 30° |
S S |
3033R2508 3041R2508 |
|
 |
38 | 1 1/2 | 2×5 | 2×5 | 2×8 | 6×8 | 30° | S | 3038R25F08 | |
 |
43 45 |
1 11/16 1 3/4 |
3×5 3×5 |
- 1×5 |
3×8 3×8 |
6×9 6×10 |
30° 30° |
M M |
3043R2509 3045R2509 | |
| Reaming tools | ||||||||||
Pilot bit 6°taper |
40 | 1 37/64 | 2×5 | 2×5.5 | 2×8 | 4×9 | 30° | - | 3040R2506KP | |
Reaming bit 6°taper  |
76 | 3 | - | - | - | 8×11 | 35° | - | 3076R2508KR | |
| Drill rod | Dimensions L | Dimensions D | Part no | |||
| mm | ft | in | mm | in | ||
Shank rod with hex 22*108 with thread R25  |
250 1500 2400 3200 4000 |
- 4 7 10 13 |
10 11 10 6 1 |
22 22 22 22 22 |
7/8 7/8 7/8 7/8 7/8 |
1022R2502 1022R2515 1022R2524 1022R2532 1022R2540 |
Shank rod with hex 25*108 with thread R25  |
250 1500 2400 3200 |
- 4 7 10 |
10 11 10 6 |
25 25 25 25 |
1 1 1 1 |
1025R2502 1025R2515 1025R2524 1025R2532 |
Hex rod 25 with threads R25/R25  |
2200 2475 2600 2800 3100 |
7 8 8 9 10 |
2 2 6 2 2 |
25 25 25 25 25 |
1 1 1 1 1 |
2125R2522 2125R2524 2125R2526 2125R2528 2125R2531 |
Hex rod 25 with threads R25/R25 (MF)  |
1525 1830 |
5 6 |
- - |
25 25 |
1 1 |
2125R25MF15 2125R25MF18 |
| Coupling | L (mm) | Dimensions D | Part no | |
| mm | mm | in | ||
R25-R25  |
140 | 34 | 1 11/32 | MX-R253414 |
Crossover coupling R25-R32  |
175 | 45 | 1 3/4 | MX-R25R324517 |
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Maxdrill Rock Tools Co., Ltd.
Tel.: +86-851-88639105
+86-851-88639106
Fax: +86-851-88639108
Email: office@kemaico.com
Contact person: Hedy Huang
Nationwide customer service hotline: +86-851-88517787
